




int jumpFloor(int number) {
    if(number == 1) return 1;
    if(number == 2) return 2;
    int a = 1;
    int b = 2;
    int c;
    for(int i=3;i<=number;i++){
        c = a + b;
        a = b;
        b = c;
    }
    return c;
}